I managed to modify a script which will take backup with time frame.

--Full backup using datetime file name

DECLARE @devname varchar(256)

DECLARE @DirLocationPre varchar(256)

DECLARE @DatabaseName varchar(256)

SET @DirLocationPre = 'D:\DBName\'

SET @DatabaseName = 'DBName'

SELECT @devname = @DirLocationPre + @DatabaseName + '_' + 'db' + '_' + REPLACE(REPLACE(REPLACE(CONVERT(Varchar(40), GETDATE(), 120),'-',''),':',''), ' ', '') + '.bak';

BACKUP DATABASE @DatabaseName to DISK = @devname

GO

Now, i need a script which can delete backups older than 2 days. Can someone help me please